I planted it about three weeks ago and when I planted it it was blooming an a week after planmting it stoped blooming. I feed it and water it at the base and its full of bulds but thats all it does. its in a well drained area. I planted out of the pot. Should it have been divided into more plants. I dont know what to do can you help me.
There is always stress to the plant when transplanted, especially while in bloom. Most plants go into "transplant shock". It is actually better, in the long run, for the plant to concentrate on establishing a strong root system instead of on blooming. I would trim old blooms back and water as needed. When new leaf growth is seen, it may send up sporadic blooms during summer. Some varieties bloom for longer periods. Here is an article on dianthus care and varieties. https://www.gardeningknowhow.com/ornamental/flowers/dianthus/growing-dianthus-plants.htm